Intermediate Algebra, Chapter 5, 5.2, Section 5.2, Problem 2

Determine the numerical coefficient and degree of the term $3r$
The degree is the sum of the exponents of each variable in the expression. In this case, the degree of $3r$ is 1.
A polynomial consists of terms, which are also known as monomials. The leading term in a polynomial is the highest degree term. In this case, the leading term in $3r$ is the first term, which is $3r$
The leading coefficient in a polynomial is the coefficient of the leading term. In this case, the leading term is $3r$ and the leading coefficient is 3.
The polynomial degree is 1, the leading term is $3r$, and the leading coefficient is 3